Lithium niobate and method for producing the same
US-2022123315-A1 · Apr 21, 2022 · US
Sulfide-based all-solid-state battery including positive electrode active material coated with lithium niobate precursor and method of manufacturing the same
US11563210B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11563210-B2 |
| Application number | US-202016992274-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 13, 2020 |
| Priority date | Aug 13, 2020 |
| Publication date | Jan 24, 2023 |
| Grant date | Jan 24, 2023 |
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Abstract
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Disclosed herein are a sulfide-based all-solid-state battery and a method of manufacturing the same, wherein the sulfide-based all-solid-state battery includes a positive electrode active material coated with a lithium niobate precursor, which is manufactured by a polyol process having low production cost, such that it improves safety and increases capacity of the sulfide-based all-solid-state battery.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of coating a positive electrode active material, comprising: S 1 ) mixing a polyol and a chelating agent with each other to form a polyol precursor; S 2 ) mixing the polyol precursor with lithium hydroxide and ammonium niobate oxalate hydrate to form a positive electrode active material coating material in a dry state; S 3 ) mixing the positive electrode active material coating material and a positive electrode active material with each other at a temperature to form a mixture, increasing the temperature to a target temperature of 450° C. to 500° C., heat-treating the mixture at the target temperature for 2 to 3 hours to obtain a coated positive electrode active material, and S 4 ) cooling the coated positive electrode active material to room temperature, wherein the polyol is a polyether polyol or a polyester polyol, and the chelating agent is citric acid, polyvinylpyrrolidone (PVP), carboxylic acid, or a weak acid including a nitrogen element. 2. The method of coating a positive electrode active material according to claim 1 , wherein in step S 3 ), the temperature is increased at a rate of 5° C. per minute to the target temperature, and in step S 4 ), the cooling of the coated positive electrode active material to the room temperature is performed through natural cooling.
Assignees
Inventors
Classifications
- H01M4/366Primary
as layered products · CPC title
Positive electrodes · CPC title
inorganic · CPC title
Solid materials · CPC title
Methods of deposition of the material · CPC title
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- What does patent US11563210B2 cover?
- Disclosed herein are a sulfide-based all-solid-state battery and a method of manufacturing the same, wherein the sulfide-based all-solid-state battery includes a positive electrode active material coated with a lithium niobate precursor, which is manufactured by a polyol process having low production cost, such that it improves safety and increases capacity of the sulfide-based all-solid-state …
- Who is the assignee on this patent?
- Lg Chemical Ltd, Univ California, Lg Energy Solution Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/366. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 24 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).